| South America Map Quiz | 0 | - | 5.00 | 1,540,839 |
| Countries of South America with an Empty Map | 0 | - | 4.94 | 104,107 |
| All First-Level Subdivisions of South America on a Map | 0 | - | 4.92 | 52,899 |
| Brazil States Map Quiz | 0 | - | 4.85 | 47,362 |
| States of Brazil | 0 | - | 4.98 | 86,309 |
| Latin American Countries Map Quiz | 0 | - | 4.97 | 128,101 |
| Central America and Caribbean Map Quiz | 0 | - | 4.89 | 899,677 |
| States of Mexico | 0 | - | 4.95 | 173,243 |
| Mexico States Map Quiz | 0 | - | 4.84 | 103,748 |
| Central American Countries | 0 | - | 4.98 | 154,984 |
| Caribbean / Lesser Antilles Map Quiz | 0 | - | 4.99 | 145,784 |
| History of Mexico | 0 | - | 4.58 | 15,227 |
| United States Map Quiz | 0 | - | 4.98 | 4,140,959 |
| Flags of North and South America | 0 | - | 4.99 | 366,629 |
| South American Physical Geography | 0 | - | 4.58 | 18,269 |
| Belize Country Quiz | 0 | - | 4.85 | 20,792 |
| Saint Vincent and the Grenadines Country Quiz | 0 | - | 4.88 | 19,041 |
| Countries of North America Quiz | 0 | - | 5.00 | 1,011,176 |
| Canada Provinces and Territories | 0 | - | 5.00 | 337,666 |
| Canada Provinces Map Quiz | 0 | - | 4.99 | 635,749 |
| The Only American Country ... | 0 | - | 4.92 | 120,714 |
| American Countries with the Shortest Names | 0 | - | 4.96 | 120,304 |
| South America Capitals Quiz | 0 | - | 5.00 | 477,061 |
| Guyana Country Quiz | 0 | - | 4.49 | 22,574 |
| Venezuela Country Quiz | 0 | - | 4.50 | 30,379 |
| Paraguay Country Quiz | 0 | - | 4.53 | 25,072 |
| Bolivia Country Quiz | 0 | - | 4.63 | 26,000 |
| Suriname Country Quiz | 0 | - | 4.60 | 19,658 |
| Dominica Country Quiz | 0 | - | 4.81 | 19,662 |
| North American Capitals - Map Quiz | 0 | - | 4.87 | 56,914 |
| All First-Level Subdivisions of North America on a Map | 0 | - | 4.97 | 62,888 |
| U.S. State Border Crossings | 0 | - | 4.97 | 95,925 |
| U.S. Citizenship Test Questions | 0 | - | 4.83 | 238,270 |
| U.S. Cities with the Most International Tourists | 0 | - | 4.88 | 74,826 |
| Cities and Towns of Massachusetts | 0 | - | 4.92 | 73,025 |
| Countries Larger Than Texas but With Fewer People | 0 | - | 4.92 | 39,466 |
| Countries of Europe in 1815 With a Map | 0 | - | 4.99 | 148,870 |
| Countries of Europe in 1848 | 0 | - | 4.98 | 75,366 |
| Every Country of Europe Since 1815 With a Map | 0 | - | 4.98 | 70,062 |
| Islands of the Galápagos | 0 | - | 4.54 | 4,754 |
| South American Cities on the Map | 0 | - | 4.57 | 35,238 |
| Caribbean Countries and Territories | 0 | - | 4.80 | 112,303 |
| States of the U.S. in Alphabetical Order | 0 | - | 4.98 | 365,188 |
| Biggest Countries in Europe in 1700 | 0 | - | 4.73 | 58,124 |
| States of the German Confederation in 1848 | 0 | - | 4.89 | 31,507 |
| Countries of the Mongol Empire on a Map | 0 | - | 4.99 | 105,817 |
| Top 10 Biggest Economies in the Americas | 0 | - | 4.94 | 91,047 |
| American Countries With No Atlantic Coastline | 0 | - | 4.94 | 91,873 |
| Word Chain - South America | 0 | - | 4.51 | 23,759 |
| Name the U.S. National Parks | 0 | - | 4.86 | 58,719 |
| Total United States Immigration by Country | 0 | - | 4.91 | 110,612 |
| Most Common U.S. Last Names - Extreme | 0 | - | 4.94 | 173,102 |
| "Do Not Travel" Countries for U.S. Citizens | 0 | - | 4.97 | 240,635 |
| U.S. Cabinet Departments | 0 | - | 4.86 | 72,505 |
| Top 10 Non-English Languages Spoken in New York City | 0 | - | 4.84 | 65,595 |
| Modern-Day Countries of the British Empire in 1921 | 0 | - | 4.99 | 116,196 |
| Name the English Monarchs | 0 | - | 4.92 | 497,701 |
| Top 10 American Countries by Coastline | 0 | - | 4.96 | 88,059 |
| Top 10 Richest Countries in the Americas | 0 | - | 4.90 | 76,072 |
| Colombia Country Quiz | 0 | - | 4.90 | 40,302 |
| Jamaica Country Quiz | 0 | - | 4.58 | 34,855 |
| Haiti Country Quiz | 0 | - | 4.79 | 32,331 |
| Pixelated United States Map | 0 | - | 4.89 | 93,433 |
| Most-Visited Countries by Americans | 0 | - | 4.87 | 108,403 |
| Countries that Visit the United States the Most | 0 | - | 4.96 | 90,808 |
| U.S. Presidents Quiz | 0 | - | 5.00 | 3,652,110 |
| Deadliest U.S. Wars | 0 | - | 4.89 | 189,199 |
| Embarrassing Chapters in US History | 0 | - | 4.17 | 32,985 |
| The 13 Colonies Quiz | 0 | - | 4.97 | 116,675 |
| U.S. States with the Letter Y | 0 | - | 4.85 | 110,308 |
| 10 Southernmost U.S. States | 0 | - | 4.88 | 112,362 |
| U.S. States with Short Names | 0 | - | 4.91 | 147,592 |
| U.S. States that Start with M | 0 | - | 4.93 | 185,860 |
| U.S. States By Population | 0 | - | 4.92 | 152,319 |
| U.S. States that Start with N | 0 | - | 4.95 | 170,347 |
| U.S. States with Longest Names | 0 | - | 4.84 | 43,830 |
| 10 Northernmost U.S. States | 0 | - | 4.90 | 81,873 |
| U.S. States with a Unique First Letter | 0 | - | 4.96 | 87,504 |
| 10 Westernmost U.S. States | 0 | - | 4.95 | 63,740 |
| The Only Remaining U.S. State . . . | 0 | - | 4.92 | 64,850 |
| Top 10 Largest U.S. States by Area | 0 | - | 4.95 | 158,837 |
| Top 10 Smallest U.S. States by Area | 0 | - | 4.98 | 177,058 |
| Top 10 Poorest U.S. States by Median Income | 0 | - | 4.86 | 124,451 |
| U.S. States with the Highest Percentage of Hispanics | 0 | - | 4.85 | 69,051 |
| Top 10 Newest U.S. States | 0 | - | 4.85 | 85,643 |
| Top 10 U.S. States Where the Rent is Too Dang High | 0 | - | 4.84 | 66,802 |
| Countries Closest to Canada | 0 | - | 4.90 | 197,309 |
| European Countries by First 2 Letters | 0 | - | 4.95 | 526,214 |
| Letters of the Greek Alphabet | 0 | - | 4.97 | 641,616 |
| Name that Greek Letter | 0 | - | 4.94 | 321,538 |
| Prime Ministers of the UK | 0 | - | 4.96 | 434,438 |
| African Countries by First 2 Letters | 0 | - | 4.96 | 266,444 |
| Colonies of Africa with a Map | 0 | - | 4.77 | 53,924 |
| Famous People from South America | 0 | - | 4.15 | 21,780 |
| Countries Bordering Brazil | 0 | - | 4.96 | 131,032 |
| Countries That Visit Brazil The Most | 0 | - | 4.95 | 49,269 |
| Countries that Beat the United States | 0 | - | 4.93 | 165,495 |
| Old West History | 0 | - | 4.33 | 15,220 |
| Life of Benjamin Franklin | 0 | - | 4.24 | 6,489 |
| American Revolution - Multiple Choice | 0 | - | 4.34 | 19,846 |
| U.S. History Multiple Choice #3 | 0 | - | 4.43 | 24,643 |
| Top 10 Most-Visited U.S. States | 0 | - | 4.90 | 101,044 |
| U.S. States with the Most Immigrants | 0 | - | 4.85 | 81,910 |
| Countries that Beat Canada | 0 | - | 4.90 | 86,824 |
| Save Europeans by Guessing Countries | 0 | - | 4.84 | 209,292 |
| History of Russia Quiz | 0 | - | 4.49 | 31,784 |
| The Trojan War | 0 | - | 4.83 | 39,419 |
| Greek Mythology General Knowledge #1 | 0 | - | 4.85 | 110,481 |
| History of Italy | 0 | - | 4.55 | 31,807 |
| Ancient Roman Trivia #1 | 0 | - | 4.85 | 84,021 |
| Roman Emperors | 0 | - | 4.95 | 118,403 |
| Geography of the Dutch Empire | 0 | - | 4.62 | 34,476 |
| Countries of the Spanish Empire | 0 | - | 4.52 | 76,974 |
| Invasions of Great Britain | 0 | - | 4.51 | 59,374 |
| The United States... or the United Kingdom? | 0 | - | 4.87 | 97,808 |
| Asian Countries by First 2 Letters | 0 | - | 4.91 | 277,048 |
| Mexican Foods | 0 | - | 4.07 | 14,607 |
| South America A-Z | 0 | - | 4.13 | 10,836 |
| El Salvador Country Quiz | 0 | - | 4.62 | 31,462 |
| Guatemala Country Quiz | 0 | - | 4.63 | 25,196 |
| Honduras Country Quiz | 0 | - | 4.52 | 23,672 |
| Nicaragua Country Quiz | 0 | - | 4.62 | 26,351 |
| Largest Caribbean Islands | 0 | - | 4.07 | 16,581 |
| Saintly Islands of the Caribbean | 0 | - | 4.32 | 23,919 |
| Antigua and Barbuda Country Quiz | 0 | - | 4.66 | 21,897 |
| Barbados Country Quiz | 0 | - | 4.78 | 19,638 |
| Territories of the United States | 0 | - | 4.79 | 52,121 |
| Five Biggest Immigrant Groups by Decade in the US | 0 | - | 4.78 | 39,364 |
| Most Mentioned Enemies of the USA | 0 | - | 4.77 | 174,498 |
| Major non-NATO U.S. Allies | 0 | - | 4.52 | 51,714 |
| U.S. Presidents by Picture | 0 | - | 4.87 | 423,513 |
| New York City Geography | 0 | - | 4.42 | 32,906 |
| History of Pennsylvania | 0 | - | 4.16 | 7,087 |
| History of Virginia | 0 | - | 4.31 | 11,555 |
| Events in U.S. History | 0 | - | 4.40 | 28,465 |
| Canada Immigration by Country | 0 | - | 4.51 | 62,207 |
| Europe Map Quiz | 0 | - | 5.00 | 4,729,727 |
| Olympian Gods Quiz | 0 | - | 4.96 | 495,664 |
| Ancient Greek Words | 0 | - | 4.92 | 110,632 |
| History of India | 0 | - | 4.61 | 21,273 |
| Africa Map Quiz | 0 | - | 5.00 | 2,103,682 |
| History of South Africa | 0 | - | 4.60 | 17,599 |
| Oceania Map Quiz | 0 | - | 4.98 | 634,976 |
| Australian Capitals | 0 | - | 4.92 | 62,589 |
| Largest Virgin Islands | 0 | - | 4.24 | 5,274 |
| Grenada Country Quiz | 0 | - | 4.62 | 18,773 |
| Saint Kitts and Nevis Country Quiz | 0 | - | 4.57 | 18,607 |
| Trinidad and Tobago Country Quiz | 0 | - | 4.61 | 22,009 |
| U.S. State Nicknames Quiz | 0 | - | 4.47 | 50,251 |
| Countries with American Expatriates | 0 | - | 4.53 | 42,468 |
| United States Landmarks Map Quiz | 0 | - | 4.55 | 40,072 |
| United States Country Quiz | 0 | - | 4.43 | 100,536 |
| Busiest Air Routes from the U.S. | 0 | - | 4.46 | 76,589 |
| First Names of U.S. Presidents | 0 | - | 4.85 | 379,474 |
| Name a Valid U.S. President #1 | 0 | - | 4.89 | 189,744 |
| The Life of Thomas Edison | 0 | - | 4.03 | 4,893 |
| U.S. History Multiple Choice #2 | 0 | - | 4.32 | 24,986 |
| U.S. History Multiple Choice #1 | 0 | - | 4.31 | 22,152 |
| U.S. History Multiple Choice #4 | 0 | - | 4.26 | 25,486 |
| Canada Country Quiz | 0 | - | 4.54 | 131,677 |
| Canada Cities Map Quiz | 0 | - | 4.63 | 123,582 |
| Canada A-Z | 0 | - | 4.73 | 32,639 |
| Count to 10 in Europe: Pro | 0 | - | 4.85 | 68,559 |
| Official European Union Languages | 0 | - | 4.97 | 236,458 |
| European Countries in their Native Language | 0 | - | 4.99 | 156,656 |
| Europe by Borders in 30 Seconds | 0 | - | 4.98 | 425,046 |
| History of Austria | 0 | - | 4.70 | 17,742 |
| Geography of the French Empire | 0 | - | 4.48 | 26,923 |
| The French Revolution | 0 | - | 4.46 | 23,770 |
| History of France | 0 | - | 4.59 | 55,968 |
| Biggest Cities in Germany in 1910 | 0 | - | 4.41 | 23,380 |
| Roman Numeral Decoding Quiz | 0 | - | 4.94 | 433,357 |
| Two Letter Roman Numerals | 0 | - | 4.97 | 55,596 |
| The Vikings! | 0 | - | 4.45 | 28,237 |
| The Portuguese Empire | 0 | - | 4.54 | 11,986 |
| Wives of King Henry VIII | 0 | - | 4.55 | 53,164 |
| Countries the UK Declared War On | 0 | - | 4.61 | 121,739 |
| Geography of the British Empire | 0 | - | 4.48 | 39,467 |
| East Asia Map Quiz | 0 | - | 4.99 | 1,439,310 |
| Asia Map Quiz | 0 | - | 4.99 | 906,603 |
| Asian Countries Americans Travel to the Most | 0 | - | 4.75 | 59,636 |
| History of Iran | 0 | - | 4.65 | 16,262 |
| History of China | 0 | - | 4.37 | 56,673 |
| Countries of the World in 1938 Quiz | 0 | - | 4.95 | 92,833 |
| Historic Journeys on a World Map | 0 | - | 4.99 | 46,123 |
| Countries by Founding Story | 0 | - | 4.95 | 76,489 |
| Independence from Whom | 0 | - | 4.99 | 209,590 |
| Who Controlled These Colonies? | 0 | - | 4.88 | 130,676 |
| Most Recently-Settled Countries | 0 | - | 4.94 | 61,970 |
| Countries that Bordered British India with an Empty Map | 0 | - | 4.68 | 55,151 |
| Countries of Africa | 0 | - | 5.00 | 2,506,376 |
| Landlocked Countries in Africa | 0 | - | 4.99 | 45,778 |
| African East Coast | 0 | - | 4.96 | 94,998 |
| Western Africa Map Quiz | 0 | - | 4.97 | 72,890 |
| Oceanian Capitals - Map Quiz | 0 | - | 4.95 | 49,759 |
| Australia Map Quiz | 0 | - | 4.94 | 342,375 |
| Prime Ministers of Australia | 0 | - | 4.50 | 31,660 |
| Pixelated Americas Map | 0 | - | 4.40 | 46,791 |
| Hispanic Last Names in the U.S. | 0 | - | 4.31 | 54,609 |
| Mexico Country Quiz | 0 | - | 4.49 | 71,957 |
